The Start method

Learn when the Start method is called.

When is Start called?

The Start method is the startup method of a MonoBehaviour. When the object is active and the script is enabled, it is called right before the first frame is updated, and it runs only once.

void Start()
{
    puan = 0;
    Debug.Log("Hazir");
}

This is why initial values are best assigned inside Start.

What running once means

The code inside Start runs only once during the game and never repeats. Repeating work belongs to the Update method. If the object or the script is disabled, Start is never called.

void Start()
{
    // runs only once
    aktif = true;
}

So Start is reserved for setup and preparation.

Exercise Set the initial value

In a class named Karakter, declare an int can field. In the Start method, assign the value 100 to can and print "Can: 100" with Debug.Log.

Show example solution

using UnityEngine;

public class Karakter : MonoBehaviour
{
    int can;

    void Start()
    {
        can = 100;
        Debug.Log("Can: 100");
    }
}

Test yourself

When is the Start method called?
- When the script file is compiled
- Right before the first frame is updated, only once
- Once every frame
- When the object is destroyed
Show answer

Right before the first frame is updated, only once — Start is called once before the first update; repeating work belongs to the Update method.

Define the Start method

using UnityEngine;

public class Hazirlanma : MonoBehaviour
{
    void ____()
    {
        Debug.Log("Hazir");
    }
}

Show answer

using UnityEngine;

public class Hazirlanma : MonoBehaviour
{
    void Start()
    {
        Debug.Log("Hazir");
    }
}

Rules of Start

void Start()

Called only once
İlk güncelleme

Comes right after Start
Devre dışı script

Never calls Start
Başlangıç değerleri

Assigned inside Start

Next lesson: The Update method

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